These facts are further explained in Caitanya-caritāmṛta ( Ādi 9.41) :

bhārata-bhūmite haila manuṣya-janma yāra janma sārthaka kari’ kara para-upakāra

“One who has taken his birth as a human being in the land of India [Bhārata-varṣa] should make his life successful and work for the benefit of all other people.”

There are many facilities in India, Bhārata-varṣa, for executing devotional service. In Bhārata-varṣa, all the ācāryas contributed their experience, and Śrī Caitanya Mahāprabhu personally appeared to teach the people of Bhārata-varṣa how to progress in spiritual life and be fixed in devotional service to the Lord. From all points of view, Bhārata-varṣa is the special land where one can very easily understand the process of devotional service and adopt it to make his life successful. If one makes his life successful in devotional service and then preaches devotional service in other parts of the world, people throughout the world will actually benefit.